accompaniment, concomitant, attendant, co-occurrence -- (an event or situation that happens at the same time as or in connection with another)
Overview of adj concomitant
The adj concomitant has 1 sense
attendant, consequent, accompanying, concomitant, incidental, ensuant, resultant, sequent -- (following or accompanying as a consequence; "an excessive growth of bureaucracy, with attendant problems"; "snags incidental to the changeover in management"; "attendant circumstances"; "the period of tension and consequent need for military preparedness"; "the ensuant response to his appeal"; "the resultant savings were considerable")